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SoGeometryShader(3) Library Functions Manual SoGeometryShader(3)

NAME

SoGeometryShader - The SoGeometryShader class is used for loading geometry shader programs.

SYNOPSIS

#include <Inventor/nodes/SoGeometryShader.h>

Inherits SoShaderObject.

Public Types


enum InputType { POINTS_IN, LINES_IN, TRIANGLES_IN }
enum OutputType { POINTS_OUT, LINE_STRIP_OUT, TRIANGLE_STRIP_OUT }

Public Types inherited from SoShaderObject
enum SourceType { ARB_PROGRAM, CG_PROGRAM, GLSL_PROGRAM, FILENAME }

Public Types inherited from SoNode
enum NodeType { INVENTOR = 0x0000, VRML1 = 0x0001, VRML2 = 0x0002, INVENTOR_1 = 0x0004, INVENTOR_2_0 = 0x0008, INVENTOR_2_1 = 0x0010, INVENTOR_2_5 = 0x0020, INVENTOR_2_6 = 0x0040, COIN_1_0 = 0x0080, COIN_2_0 = 0x0100, EXTENSION = 0x0200, COIN_2_2 = 0x0400, COIN_2_3 = 0x0800, COIN_2_4 = 0x1000, INVENTOR_5_0 = 0x2000, COIN_2_5 = 0x4000, COIN_3_0 = 0x8000, INVENTOR_6_0 = 0x10000 }

Public Member Functions


virtual SoType getTypeId (void) const
SoGeometryShader (void)
virtual ~SoGeometryShader ()
virtual void GLRender (SoGLRenderAction *action)

Public Member Functions inherited from SoShaderObject
virtual void search (SoSearchAction *action)
void updateParameters (SoState *state)
SourceType getSourceType (void) const
SbString getSourceProgram (void) const

Public Member Functions inherited from SoNode
void setOverride (const SbBool state)
SbBool isOverride (void) const
void setNodeType (const NodeType type)
NodeType getNodeType (void) const
virtual SoNode * copy (SbBool copyconnections=FALSE) const
virtual SbBool affectsState (void) const
virtual void doAction (SoAction *action)
virtual void GLRenderBelowPath (SoGLRenderAction *action)
virtual void GLRenderInPath (SoGLRenderAction *action)
virtual void GLRenderOffPath (SoGLRenderAction *action)
virtual void callback (SoCallbackAction *action)
virtual void getBoundingBox (SoGetBoundingBoxAction *action)
virtual void getMatrix (SoGetMatrixAction *action)
virtual void handleEvent (SoHandleEventAction *action)
virtual void pick (SoPickAction *action)
virtual void rayPick (SoRayPickAction *action)
virtual void write (SoWriteAction *action)
virtual void audioRender (SoAudioRenderAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual void grabEventsSetup (void)
virtual void grabEventsCleanup (void)
virtual void startNotify (void)
virtual void notify (SoNotList *l)
uint32_t getNodeId (void) const
virtual SoChildList * getChildren (void) const
virtual void writeInstance (SoOutput *out)
virtual SoNode * addToCopyDict (void) const
virtual void copyContents (const SoFieldContainer *from, SbBool copyconnections)
virtual SoFieldContainer * copyThroughConnection (void) const

Public Member Functions inherited from SoFieldContainer
void setToDefaults (void)
SbBool hasDefaultValues (void) const
SbBool fieldsAreEqual (const SoFieldContainer *container) const
void copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE)
SbBool set (const char *const fielddata)
void get (SbString &fielddata)
virtual int getFields (SoFieldList &l) const
virtual int getAllFields (SoFieldList &l) const
virtual SoField * getField (const SbName &name) const
virtual SoField * getEventIn (const SbName &name) const
virtual SoField * getEventOut (const SbName &name) const
SbBool getFieldName (const SoField *const field, SbName &name) const
SbBool enableNotify (const SbBool flag)
SbBool isNotifyEnabled (void) const
SbBool set (const char *fielddata, SoInput *input)
void get (SbString &fielddata, SoOutput *out)
virtual SbBool validateNewFieldValue (SoField *field, void *newval)
virtual void addWriteReference (SoOutput *out, SbBool isfromfield=FALSE)
SbBool getIsBuiltIn (void) const
virtual void getFieldsMemorySize (size_t &managed, size_t &unmanaged) const
void setUserData (void *userdata) const
void * getUserData (void) const

Public Member Functions inherited from SoBase
void ref (void) const
void unref (void) const
void unrefNoDelete (void) const
int32_t getRefCount (void) const
void touch (void)
SbBool isOfType (SoType type) const
virtual SbName getName (void) const
virtual void setName (const SbName &newname)
void addAuditor (void *const auditor, const SoNotRec::Type type)
void removeAuditor (void *const auditor, const SoNotRec::Type type)
const SoAuditorList & getAuditors (void) const
SbBool shouldWrite (void)
void assertAlive (void) const

Static Public Member Functions


static SoType getClassTypeId (void)
static void initClass (void)
static SbBool isSupported (SourceType sourceType)

Static Public Member Functions inherited from SoShaderObject
static SoType getClassTypeId (void)
static void initClass (void)

Static Public Member Functions inherited from SoNode
static uint32_t getCompatibilityTypes (const SoType &nodetype)
static SoType getClassTypeId (void)
static SoNode * getByName (const SbName &name)
static int getByName (const SbName &name, SoNodeList &l)
static void initClass (void)
static void initClasses (void)
static uint32_t getNextNodeId (void)
static int getActionMethodIndex (const SoType type)
static void getBoundingBoxS (SoAction *action, SoNode *node)
static void GLRenderS (SoAction *action, SoNode *node)
static void callbackS (SoAction *action, SoNode *node)
static void getMatrixS (SoAction *action, SoNode *node)
static void handleEventS (SoAction *action, SoNode *node)
static void pickS (SoAction *action, SoNode *node)
static void rayPickS (SoAction *action, SoNode *node)
static void searchS (SoAction *action, SoNode *node)
static void writeS (SoAction *action, SoNode *node)
static void audioRenderS (SoAction *action, SoNode *node)
static void getPrimitiveCountS (SoAction *action, SoNode *node)

Static Public Member Functions inherited from SoFieldContainer
static void initClass (void)
static SoType getClassTypeId (void)
static void cleanupClass (void)
static void initCopyDict (void)
static void addCopy (const SoFieldContainer *orig, const SoFieldContainer *copy)
static SoFieldContainer * checkCopy (const SoFieldContainer *orig)
static SoFieldContainer * findCopy (const SoFieldContainer *orig, const SbBool copyconnections)
static void copyDone (void)

Static Public Member Functions inherited from SoBase
static void initClass (void)
static SoType getClassTypeId (void)
static void addName (SoBase *const base, const char *const name)
static void removeName (SoBase *const base, const char *const name)
static void incrementCurrentWriteCounter (void)
static void decrementCurrentWriteCounter (void)
static SoBase * getNamedBase (const SbName &name, SoType type)
static int getNamedBases (const SbName &name, SoBaseList &baselist, SoType type)
static SbBool read (SoInput *input, SoBase *&base, SoType expectedtype)
static void setInstancePrefix (const SbString &c)
static void setTraceRefs (SbBool trace)
static SbBool getTraceRefs (void)
static SbBool connectRoute (SoInput *input, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)
static SbBool readRoute (SoInput *input)

Public Attributes


SoSFEnum inputType
SoSFEnum outputType
SoSFInt32 maxEmit

Public Attributes inherited from SoShaderObject
SoSFBool isActive
SoSFEnum sourceType
SoSFString sourceProgram
SoMFNode parameter

Protected Member Functions


virtual const SoFieldData * getFieldData (void) const

Protected Member Functions inherited from SoShaderObject
SoShaderObject (void)
virtual ~SoShaderObject ()
virtual SbBool readInstance (SoInput *in, unsigned short flags)

Protected Member Functions inherited from SoNode
SoNode (void)
virtual ~SoNode ()

Protected Member Functions inherited from SoFieldContainer
SoFieldContainer (void)
virtual ~SoFieldContainer ()

Protected Member Functions inherited from SoBase
SoBase (void)
virtual ~SoBase ()
virtual void destroy (void)
SbBool hasMultipleWriteRefs (void) const
SbBool writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const
void writeFooter (SoOutput *out) const
virtual const char * getFileFormatName (void) const

Static Protected Member Functions


static const SoFieldData ** getFieldDataPtr (void)

Static Protected Member Functions inherited from SoShaderObject
static const SoFieldData ** getFieldDataPtr (void)

Static Protected Member Functions inherited from SoNode
static const SoFieldData ** getFieldDataPtr (void)
static void setNextActionMethodIndex (int index)
static int getNextActionMethodIndex (void)
static void incNextActionMethodIndex (void)
static void setCompatibilityTypes (const SoType &nodetype, const uint32_t bitmask)

Static Protected Member Functions inherited from SoBase
static uint32_t getCurrentWriteCounter (void)
static void staticDataLock (void)
static void staticDataUnlock (void)

Additional Inherited Members

Protected Types inherited from SoBase
enum BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }

Protected Attributes inherited from SoNode
uint32_t uniqueId

Protected Attributes inherited from SoFieldContainer
SbBool isBuiltIn

Static Protected Attributes inherited from SoNode
static uint32_t nextUniqueId = 1
static int nextActionMethodIndex = 0

Detailed Description

The SoGeometryShader class is used for loading geometry shader programs.

See Shaders in Coin for more information on how to set up a scene graph with shaders.

FILE FORMAT/DEFAULTS:

GeometryShader {

isActive TRUE
sourceType FILENAME
sourceProgram ""
parameter []
inputType TRIANGLES_IN
outputType TRIANGLE_STRIP_OUT
maxEmit 8 }

See also

SoShaderObject

SoShaderProgram

Since

Coin 2.5

Member Enumeration Documentation

enum SoGeometryShader::InputType

Enumerates the input types.

Enumerator

Shader uses points as input.
Shader uses lines as input.
Shader uses triangles as input. OpenGL will automatically convert quads and polygons into triangles.

enum SoGeometryShader::OutputType

Enumerates the output types.

Enumerator

Shader generates points.
Shader generates line strips.

Constructor & Destructor Documentation

SoGeometryShader::SoGeometryShader (void)

Constructor.

SoGeometryShader::~SoGeometryShader () [virtual]

Destructor.

Member Function Documentation

SoType SoGeometryShader::getTypeId (void) const [virtual]

Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and 'downward' casting.

Usage example:

void foo(SoNode * node)
{

if (node->getTypeId() == SoFile::getClassTypeId()) {
SoFile * filenode = (SoFile *)node; // safe downward cast, knows the type
} }

For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.

For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.

Reimplemented from SoShaderObject.

const SoFieldData * SoGeometryShader::getFieldData (void) const [protected], [virtual]

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoShaderObject.

void SoGeometryShader::GLRender (SoGLRenderAction * action) [virtual]

Action method for the SoGLRenderAction.

This is called during rendering traversals. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method.

Reimplemented from SoShaderObject.

SbBool SoGeometryShader::isSupported (SourceType sourceType) [static]

Returns a boolean indicating whether the requested source type is supported by the OpenGL driver or not.

Beware: To get a correct answer, a valid OpenGL context must be available.

Member Data Documentation

SoSFEnum SoGeometryShader::inputType

The type of geometry used as input to the shader. Default value is TRIANGLES_IN.

SoSFEnum SoGeometryShader::outputType

The type of geometry generated from the shader. Default value is TRIANGLE_FAN_OUT.

SoSFInt32 SoGeometryShader::maxEmit

The maximum number of vertices emitted from the shader. Default value is 8. This corresponds to the GL_GEOMETRY_VERTICES_OUT_EXT enum.

Author

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Version 3.1.3 Coin